关于Object references an unsaved transient instance

阅读更多

首先引用以下连接,从中得到答案:

http://www.newbooks.com.cn/info/118573.html

在我自己的实际项目中发生如下问题:

java 代码

try {
            grpCustomerInfo.setCorporationname(corporationName);
            grpCustomerInfo.setProvince(province);
            grpCustomerInfo.setCity(city);
            grpCustomerInfo.setParentsign(ynoHO);
            grpCustomerInfo.setOrganizationproperty(organizationProperty);
            grpCustomerInfo.setParentcustomerid(mainCustomerIDForSub);
            grpCustomerInfo.setCorporationadds(corporationAdds);
            grpCustomerInfo.setCorporationproperty(corporationProperty);
            grpCustomerInfo.setTradetype(tradeType);
            grpCustomerInfo.setCorporationphone(corporationPhone);
            grpCustomerInfo.setCorporationfax(corporationFax);
            grpCustomerInfo.setPostalcode(postalcode);
            grpCustomerInfo.setFoundationdate(foundationDate);
            grpCustomerInfo.setSumpersons(Integer.getInteger(sumPersons));
            grpCustomerInfo.setCustomerid(maincustomerid);
            //管理机构
            grpCustomerInfo.setOrganization(organization);
            //操作者
            grpCustomerInfo.setOperator(operator);
            //操作时间
            grpCustomerInfo.setOperationTime(operationTime);
            grpCustomerInfo.getNewpolicies().add(this.getNewPolicy(printNO));
            this.getNewPolicy(printNO).setGrpcustomerinfo(grpCustomerInfo);
            this.getGrpCustomerInfoDAO().save(grpCustomerInfo);
            this.getNewPolicyDAO().update(this.getNewPolicy(printNO));
            //设置表Savenewpolicystate的Savecustomerinofstate字段为1，该字段表示客户信息已经保存
            //客户信息录入状态
            this.getNewPolicy(printNO).getSavenewpolicystate().setSavecustomerinofstate("1");

            this.getSaveNewPolicyStateDAO().update(this.getNewPolicy(printNO).getSavenewpolicystate());
            bl=true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bl;

 但是如果将24行到29行顺序调整为:

java 代码

this.getNewPolicy(printNO).setGrpcustomerinfo(grpCustomerInfo);

//设置表Savenewpolicystate的Savecustomerinofstate字段为1，该字段表示客户信息已经保存
//客户信息录入状态
this.getNewPolicy(printNO).getSavenewpolicystate().setSavecustomerinofstate("1");

this.getGrpCustomerInfoDAO().save(grpCustomerInfo);
this.getNewPolicyDAO().update(this.getNewPolicy(printNO));
this.getSaveNewPolicyStateDAO().update(this.getNewPolicy(printNO).getSavenewpolicystate());

将会发生Object references an unsaved transient instance的问题.

因为"某个对象的某个属性是一个实体，在这个实体没有保存之前就保存这个对象而造成了这个错误。"在以上例子中this.getNewPolicy(printNO)没有保存,就在以下的程序中使用了,this.getNewPolicy(printNO).getSavenewpolicystate().所以出现错误!